Shell minute, ovate, imperforate, translucent, polished. Sculpture : Sometimes a few microscopic distant spiral lines are present on the upper whorls, but usually the surface of the shell is quite smooth. Colour white. Spire conic, higher than the aperture, the outlines slightly convex. Protoconch small, globose, and smooth. Whorls 5, slightly convex, the last rounded, but somewhat flattened below the suture ; base convex. Suture not much impressed, margined below. Aperture oval, vertical, angled above. Peristome continuous, slightly thickened and expanded. Columella short, arcuate. Operculum unknown.
Diameter, 0,8 mm. ; height, 1,5 mm.
Hab: Titahi Bay, Cook Strait, type (Miss Mestayer).